Printing-telegraph receiver.



N o. 676,|37`. Patented lune Il, |90L J; M. J0:Y.

PRINTlNE TELEGRAPH RECEIVER.

(Application fild Bcpt. 20, 1900.) (No Modal.) 4 Sheetsvsheei I..

El* Q 619i hwooea .ULM/4% m: mums vsvcns co. pHoro-urna. wAsyamcmu. o. c.

y no. a7s,|s7. Patented ma n, mm.-`

J. M. Juv. PRINTING TELEGRAPH RECEIVER.

(Application lsd Sept. 20, 1900.) (lo Model.)

4 Sheets-$heet 2.

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wbr -l MMM W ms ohms News cc. motauwo msnmaon n c No. 676,I37. A Pate-nted luna Il .|90l .L M. Juv.

. PRINTING TELEGBAPH RECEIVER.

(Apx'slication led. Se L 20, 19 (un nodal.) P 0) 4 sheets-sheet a.

F' .3. .Z5 I@ No. 676,137. Patented June |9ol. J. M. Juv.

PRINTING TELEGBAPI'I RECEIVER.

(Application med sept. 2o, 1900.)

(No Model.)

4 Sheets-Sheet 4.

mi nomas Pfriks w. Pao-rmwum wnsumaron. n. c.

enable those skilled in the art to make and` JOHN M. JoY, or NEwToRILNQY.,

PATENT FFVICE.

ASSIGNOR TIHE PRINTING TELE- GRAPII NEWS COMPANY, OF SAME PLACE.

PRINTINGTELEGRAPH RECEIVER.

srncrrrcnrron forming part (if-Letters Patent No. even saneren .rune 11, 1901.

Application filed September 20, 1900. Sarial No. 30,580. (No model.)

pact and not liable to get out of order; andA to these ends my invention consists in a printing-telegraph receiver embodying various fea-f tures of constructionl and arrangement ofl parts having the general mode of operation substantially as herein after more particularly set forth. i

Referring to the accompanying drawings,`

wherein I have illustrated a preferred embodiment of my invention and sufficient to i means for propelling the type-wheel and for moving the sheet of paper to form a line-space and connections. Fig. 8 is a plan view of the same, and Fig. 9 is a detail sectional view showing the preferred construction of the clutch.

As above indicated, the principal objects of my invention areto providea printing-telegraph receiver adapted to print lines transversely of a page of paper or other suitable material and to provide one which is simple while strong of construction, that can be operated with a mini mum of power and at a high rate of speed, andone that is practically useful in connection with the distribution of news from a central station, there being prel`- erably, a number of such receivers arranged Fig. 4 is an enlarged detail.

on a single circuit and distributed over a large area at considerable distances from each other, and in order to make a practical instrument for this purpose it is evident that the receivermnst be capable of performing its operations constantly and accurately without the necessity of theattendan-ce of a skilled operator, and it must be so constructed as not to be liabletoderangement by unskilled persons who may make use of the instrument.

Referring to the accompanying drawings, there is a suitable base 1, which may be supported in any suitable way, as on a case, and connected to the base are suitable upright standards 3 4, supporting the main operative parts of themachine, and arranged intermediate these standards are subsidiary standards 5 6. Mounted in the standards 3 4and 6 ,is a shaft?, forming or carrying a roller-surface 8, which is preferablyof rubber or similar material, `and mounted on this shaft are hangers or supports 9,iu which is mounted the roller 10, constituting one of the feed-rollers, and also mounted in these supports is the platen or printing-roller ll,it being adj ustably mounted with relation to the feed-roller 10 in any suitable way, and in the present instance I have 'shown it supported in suitable bearing-blocks 12, having pins 13 entering the supports 9 and preferably having a spring 14 tending to hold the platen or printing-roller in elastic contact with the feed-roller l0. There is also mounted and supported inV the blocks 12 a small guide-roller 15 for the free end of the paper. The rollers 10 and 1l are preferably geared together, as b v pinions 16 17, at one end, and the other end of the platen or printing roller is provided with a ratchet-wheel 18, with which engages a pawl 19, mounted on an arm 20, pivotally mounted on the shaft of the printing roller or platen 11, and this pawl is adapted to be operated in a manner hereinafter described to rotate the rollers to feed the paper to make the proper line-space. Any other suitable paper-carriage or support for the paper and means for feeding the same maybe used, that illustrated being found convenient and practicable.

In order to support the supply of paper to be printed, in the present instance I have any desired construction; but preferably it- Y u I shown a reel ,21,I mounted in thestandards 3 and 6, although any` other Well-knownsup;l port for the supply may be used.

- Mounted adjacent to the paper-carriage and, as shown, in the standards 3 and 4e is a type-Wheel shaft 22, and this shaft may be of is provided with two inclined sides 23 23 and one 'curved side 24, and mounted to slide on this shaft is a type-wheel 25, the hub26 of which is provided with an` opening fitting the type-Wheel shaft 22, so that the type-Wheel will be rotated with the shaft, but is permitted to slide longitudinally on the shaft, andl any suitable means may be used for'producing these motions of the type-wheel. Preferably, however, the type-Wheel shaft 22 is under fa2 constant stress tending to rotate the s an jie;inal certaindirection, and this tendency torotateis ,regulated by suitable -meansas anesoapement, and in the present instance I haxjeshown an improved escapement or what-is ,more properly termed a l double wheel-escapement, by meansof which I am andin this doubleescapement I have so arrangedtheparts that the escapement is controlledbycurrents of varying polarity, al.- though, of. course, it canbe controlled by any otherfsuitable variation of the current impulses." Mounted onA the type-Wheel shaft 22 aretwo.,escapement-Wheels 27 28, and while these .maybe mounted in any suitable Way I have shown them, for convenience of manufaetureand adjustment, as mounted on a sleeve29, which is secured to the type-Wheel shat in. any suitable Way, as by a set-screw 30 This construction of the esoapements I ndexceedingly desirable, as .they are thus made intonepiece, and their relations to each Y other arethus accurately maintained, and theyxcayn ,easily and quickly be adjusted or removed from the type-.wheel shaft in case of necessity. These Wheels are provided withA suitable teeth 3l 32, and `the teeth on one Wheel, as the teeth 3l, are arrangedaround the periphery ofv the wheel 27 at suitable distances apar-,tlwhile the teeth 3201i the Wheel 28 are arraligedcloser` together and in proper relations withthe ,teeth 31. While these relations may beva'ried and there may be any desired number roffteeth onboth Wheels, depending primarily upon the num ber of characters on the type-v wheel and the rate ot' speed at which it is rotated,.in the present instance I have arranged Ourthe wheel 27 ten teeth, and on the Wheel 28there are thirty-eight teeth. Each of these Wheels ,is provided with a suitable escape-V ment, and it will be observed that when the escapement coperatesivith the wheel 27 the ment operates with the escapement-Wheel 28 thejW-,heel can. be stopped at anyoneof thirtyeight positions in its circumference on rotation of the type-Wheel. Furthermore, When the two escapements operate together or are successively in connection with the tWo Wheels 27 28-one escapement can be usedto controlY the rotation of the type-Wheel shaft in comparatively long steps or spaces by means ot' the teeth 3l, .and then by bringing into operation the other escapement the rotation of the type-wheel shaft to any position intermediate those controlled by theeseapementfwheel 27 can be effected by the escapement Wheel. 28. In this arrangement of course it will be understood that the teeth 3l may be arranged around the periphery of the Wheel 27 in, any desired order, and they need not necessarilybe equally spaced, Aand as a matter of fact in the presentinstancetIhave shown them (see Fig. l) at varying distances apart, While I have shown theteeth32 on the Wheel 28 at equal distances apart, and. they areso arranged that between the teeth corresponding to the teeth 3l on thewheel 27 there are generally three intermediateteeth 32; but, as before stated, this relationl may be varied, that shownbeing one Well adapted to the present purposes of the receiver. The purposeand object of this double-Wheel escapement asthus described will be apparent to those skillediu theart, and if, forinstance, starting from the zeroposition ofthetype- Wheel, the wheel having thirty-eight printing characters on its periphery and it is desired io print the eighteenth character from zero, by operating the escapement in connection with the wheel 27 four impulses .ofthe current or four movements of the. escapement Will permit the type-Wheel torotate to a position to bring the sixteenth character into printing position, and then by'operating the escapement in connection withthe wheel 28 two impulses willbring the leighteerfith character into printingvposition, andV it will thus be seen that instead'. ofrequiring ,eigha teen separate and distinct impulses oropervations of the escapement to bring the eighteenth character into printingposition by'. the i use of my improved doublewheel escape-I `ment it requires only six impulses or. operations of the escapement to attainthe same are electrically controlled are largely red need and they can be more readily adjusted and :are lessliableto interfere with each other. Again, the shaft beingunder constant stress the Workof rotating the Wheelis entirely in-V dependent of the escapement, the. electric Vcurrents being used simply to control the es- IOO IIO

capement to release the escapement-wheels and allow them to rotate under the influence of a separate power. Other advantages of this double-Wheel escapement might be pointedout; but they will be apparent to those skilled in the a-rt and need not be recited. Of course it will be understood that this double-wheel escapement can be used in various other connections than those shown,` and it may beused in connection with a type-wheel which continuously rotates in one direction; but I have found it preferable in instruments of this class to so arrange the parts that the type-wheel after each impression is made will be automatically restored to its normal or zero position, so that in adjusting each character on the type-wheel to printing position the wheel is rotated from its normal or zero position to the proper position to bring the desired character into printing position. Vhile various means may be used to accomplish this result, in the present instance I have shown a suitable stop or unison device comprising a projection n33 on the extended hub of the sleeve 29 and a pivoted arm 34, mounted on a bell-crank lever 35, pivot-ally mounted on a stud 36. The arm 34 is also provided with a pin 37, which is adapted to engage a screwthread 38 on the hub of the sleeve 29, so that when the pin rests in this screw-thread and the hub rotates the arm 34 will be thrown outward to bring it into the path ofrotation of the projection 33, so that said projection will impinge upon the end of the said arm 34 and the rotation of the type wheel shaft be stopped. Normally this pin 37 engages the thread 38 but means are provided whereby it can be thrown out of engagement with the thread to allow the type-Wheel shaft to rotate after being stopped thereby. In the present instance the bell-crank lever 35 is adapted to be moved by the escapement so as to raise the arm 34 upward and disengage the pin 37 from the screw-thread 38, and at the same time a spring 39 will move the arm 34 laterally out of the path of the projection 33. This unison movement need not be further described, as its general principles of construction and operation are Well understood by those skilled in the art, and any other suitable unison mechanism may be adopted, it only being necessary to provide some suitable means which shall hold the type-Wheel and its shaft at a normal or zero position and which shall release the shaft as soon as the escapement commences to operate and which shall interpose to stop the shaft-at its zero position after the printing operation is completed and the shaft released.

As above indicated, any suitable escapement may be used in connection with the escapement-wheels; but I have shown escapement pallets or detents 40 and 4l, mounted on suitable arms 42 43, which arms in the present instance carry armatures 44 45 as a part thereof, and-each arm, with its pallet, is supported upon a spring 46, which is vertically adj ustably mounted in a socket 47, which socket is rotatively adj ustably mounted in one of the adjacent standards. In the present instance I have shown the socket as provided with an adj nsting-screw 48 for controlling the vertical adjustment of the escapement-arm and as having a rounded lateral extension 49, fitting an openingin the standard 4 or 6, as the case may be, and adj ustably secured by a set-screw 50. Also mountedin 'an extension 5l of the standard 4 are adjustable stops 52, opposite the upper portion of each arm, to control or `limit the vibration of the arm, and the arms are so adjusted in their sockets or carriers as tonormally bear against these adjusting-screws, while being normally out of engagement with the teeth of the respective wheels. There are also suitably mounted, as on an arm 53, extending from the standard 4, suitable stops 54, which serve to limit the movement of the escapementarms when the pallets are brought into operative position in connection with the ratchetteeth. Vith this construction a very accul rate and delicate adjustment of the escapement arms and pallets can be obtained and the arms adjusted to operate under varying strengths of current and with a relatively slight movement withouty affecting the accuracy of the adjustment.

When a unison device like the .one above described is used, one convenient way of 0perating it is by means of a bell-cranklever 55, mounted on a rod 56, supported in the standard 4, to which bell-crank lever are connected pins 57, conveniently sliding through openings in the arm 53 and held in a position adjacent the escapement-arm, and this arm may be provided with an adj usting-screw 58,

`so that when the arm is moved toward the escapement-wheel this screw will impinge upon the pin 57, move the bell-crank lever 55, and raise the unison-arm 34 in the manner before described. As above indicated, these escapement-arms are preferably operated electrically, and I have shown magnets 59 and 60 as suitably supported by the standards 4and 6, respectively, with their pole-pieces adjacent the respective armature portions 44 45 of the escapement-arms. Any suitable arrangement of circuits may be used in connection with these magnets, so that they may operate and their operations be controlled by proper impulses sent over the line. For instance, these magnets might be permanent polarized magnets; b ut in actual practice I preferably utilize magnets with soft-iron cores and polarize them by suitable coils connected to a suitable source of current, and in the present instance I have shown the poles of the magnets as provided with two sets of coils, one set, as 6l, being connected with some source of current-as, for instance, the current which supplies the motor hereinafter described-it being only necessary that when the machine is in operation there shall be a constant cnrrent owing through these coils to polarize IOO IIO

` in connection-withv theother devices already,V

th'enrespect-ive cores, andthesecoils-areso- Woundy or thef-,ci'rcuiitsfso connecte d' :that ,the cores-of onem"agnet,=ass59, will befpola'rized so thattheir endsadjacentto the armature will be N, while the ends of the cores of the magnetGO will be polarized so that their ends adjacent'to-the armature willfbe S. Also mounted ont thecoresare other coils 62, con` nected in the line-circuit, but' over which the impulses are sent for operating the receiver,-

and thesel coils are so wound on the respective-magnetsthat when, for instance, a positivecu-rrent isy sent' over the linel it-willNv strengthen the N pole of one of the magnets andl -Weaken- 'the S pole of the other-magnet,"

land-when, vice versa, a negative impulse is` sent over the line it=will `weaken the-.N polek ofonemagnet andstrengthen theS pole of the'other magnet;

avery slight currentwill operatethem to con.-

t'roletheir -escapement-,Wheelsand move them j in contactl withtheir back-stops, andv whilev this particular arrangement yis deemed pref`- erablehit is `understood that my inventionis not limited thereto.

`Some suitable means must be provided :for

moving. the type wheel on thettype-V wheel shaft'in proper positionto print the letters'inf lines,=andl .whileivarious meansmay be used describedfI have shownaworinshaft' 63, suitablysupported inthe standards-3 and 6, andmounted onthis shaft is atype-wheel mover 64, comprising a screw-threaded sleeve-.hav-

' ingiarms extending upward on each sideof the-hub 26 of the type-wheel, -so as to move Y. said type-wheel'longitudinallyonits shaft 22, andfI preferably vprovide the arms (i5-with pins66, vadapted tol bear on the .periphery` ofthehub,-so as 'to prevent thearms from impinging upon the type-'wheel shaft 22.

stance LI have `shown means for pnttingit under constant stress, which will-'hereinafter be described, and I have shown an escapement device for controlling its rotation.

thereis mounted on theshaft 63 anescapementwheel 67, in this instance provided with threetteeth 68,@and the screwiscut with aiv proper pitch to .move thetype-wheel the de, sired-distance for each letter at each one-thirdand'in a bracket 72, and in this instance -carrieszthe armature 73 of the magnet 74:, and I I deem it preferable' tov thusarrange the magnets, as I am enabled to y verydelicately adjust the escapement-arms, Softhat with'no current-from the line they lwil'lwimpinge uponftheir front stops-52, and

Some suitable means for rotatingthis worm-shaft 63 must be provided, and in the present in- I Thus, re'. ferringmore particularly to Figs. 3-and 4,y

for holdingthe escapement-leverin its normal position, which-isy with its pallet'70 in the path of or incontact with one of the teeth 168; There maybe a suitable adj Listing-screw 78, mounted in a stud 79, forlimitingthe free br forward movement of theescapement-le'- v"ver 69./ With this arrangement it will be 'seen' that when thel magnet 74 is energized the armature 73 is attracted,vthe shaft 7l rocked, and with it the escapement-lever 69, isoV as to-'disengage'the -pallet 70 from the tooth 168,'and the worm-shaft 63 is allowed to rotate under thepower applied thereto; but the springy 75 will retract the escapement-lever 69 as soon as the magnet 7l is denergized, so as to bringthe pallet into'the path kof the next succeedfingtooth 68. Thisy is the operationwhenit is desiredtofeed thetype-wheel yforwardf step, bystep to p rint Ythe succeeding letters ofthe line; but when itis` desired to retractthe type-wheel or bringit to its Anormal position at` the` beginning-.of aVv line the Worm-shaft is rotatedinthe reversedirection by suitable means hereinafter described,` and in order to permit this the magnet 74 is energized-and held-'energized",`which will with'- draw the pallet 70 out of thev path rofthe lteeth 63, so that the worm-shaft 63 lcan-"rotatefcontin uousl-y; until the type-Wheel mover :Get and the `type-'Wheel 25 are brought -to the propcnposit'ions, ready to print -at the beginningof.- the newline.4 Ofcourse itis desirable to move the sheet of paperarturther line-space when the type-Wheel is thus retracted, and while various meanslmay be used to accomplish-thispurpose I have shown the type-wheel mover 64 as provided with afriction-roller 80, on one side adapted to engage withan arm'Sl, bent in theform of a screw with along pitch, and secured to a diskl82at one end and to awcollar 83- at the otherend'of a rod 84E, which is mounted in the-standard 5. Connected to move with the rod v84 is a link 86, and this `is connected with the arm-2O by a link 87,`so that when the bent armvSl-is rotated the `arm 20 will be lifted, carryingfthe-pawl 19 into engagement withthe ratchet-Wheel 1S, and the rollers l0 and 1l will be rotated to feed the -paper the required distance, ready for a new line.

In order to effect the printing of the desired letter when the typewheel isl inproper position, various connections can-be made, and in the present instance I have shown as mounted on the worm-shaft 63 a cam-Wheel 88, having three cam projections 89, adapted to impinge upona lever 90,fast on the shaft 7 ,carrying the platen-0r printing-roller, so that it is moved forward, and with it the paper-,andthe proper impression `is made from the type wheel. This shaft 7 is normally under stress to hold the platen.or printingroller in proper position Opposite the type-wheel, and in this instance-I have lshown-a lever 91, fast on the shaft 7, under the-stress of a spring 92,.and

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there is an adj Listing-screw 93 in a projection 94 of the standard 3, which controls the upward movement of the printingroller.

Some suitable means must be provided for operating the type-wheel shaft and the wormshaft, and while these means may vary I have shown an electric motor 95, the armatureshaft 9G of which may be extended upward or connected to a vertical shaft 97, having a bearing in a projection 98 on the standard 3 and adapted to be rotated by said electric motor. j Also mounted in said projection 98 and in a similar projection 99 is a shaft 100, and interposed between this shaft and the type-wheel shaft 22 are bevel-gears 101 102, intermeshing with each other and adapted to rotate the type-wheel shaft. Mounted on the shaft 100 is a spur-gear 103, and this engages aspur-pinion 104, which is frictionally mounted on the shaft 97, so as to be under stress of rotation from said shaft. Different means for thus frictionally mounting the pinion may be employed, and I have shown a collar 105, fixed to the shaft against which the pinion bears, there being a spring 106 interposed between the collar 107, which also bears on the pinion, and an adjustable collar 10S, by means of which the tension of the spring 106 can be regulated. This I have found a simple and efficient friction mechanism, which can be delicately adjusted and which is sufficient to furnish power to drive the type-wheel shaft when released by the unison mechanism or escapements or both.

Mounted on the shaft 97 is a bevel-pinion 109, adapted to engage each of the bevel-pinions 110 and 111, loosely mounted on the wor1nshaft 63. The pinion 109 is also frictionally mounted on the shaft 97, there being a collar 112, with a spring 113 interposed between it and an adjustable collar 114. Also mounted on theworrnshaft 63 is a clutch 115, it being splined or otherwise connected to the shaft, so as to move longitudinally thereon, but to rotate with the shaft. This clutch is adapted to engage with complementary clutch devices on either the bevel-pinion 110 or 111 according to its position on the shaft, and thus to rotate the worin-shaft in one or the other direction. The clutch 115 in this instance comprises a cam portion 116, having three cam projections and corresponding recesses, Arranged to bear on this cam is an arm 117, pivotally connected to an arm .118, mounted on a stud 119, attached to the standard 3, and it is manifest that as the arm 117 passes alternately over the recesses and projections on the cam the arm 118 will be lifted and lowered. The arm 117 is connected rigidly to another arm 120, forming practically a bellcrank or rocking lever, and also connected to this rocking lever is a projection 121, extending between adjusting-screws 122 in a yoke 123, Xed on the arm 11S. Mounted on the bevel-gear 102 is a pin 124, which when in the position shown in Fig. 7 is in the line of upward movement of the arm 120. Also connected to the clutch is a rod 125, the forward end of which, as shown, extends over and adjacent to the disk 82 in a position to be struck by the type-wheel mover 64 as it is retracted to its position to begin the printing of a new line.

Such being the construction of the device, I will now briefly describe its mode of operation, and it will be understood that the receiveris used in connection with some suitable transmitting apparatus adapted to send impulses over the line of different polarity.

Thenormal position of the parts after the paper has been properly applied to the papercarriage is with the type-wheel at the proper position to commence the line and the projection 33 against the arm 34 of the unison mechanism, and both the type-wheel shaft and worm-shaft are under stress tending to rotate them; but the worm-shaft is held by its escapement-lever 69. The first impulse over the line may, for instance, be a positive impulse, and this would energize the magnet 60, which moving the escapement-arm 43 would, through the medium of the pin 57,`

operate the bell-crank lever 55 to lift the arm 34 of the unison mechanism out of engagement with the projection 33 and allow the type-wheel shaft to rotate until the pallet of the escapement cornes in contact with the first tooth on iis escapementwheel. Of course whether the magnet 59 or 60 would first be energized would depend upon the letter to be printed. For instance, if it were desired to rotate the type-wheel only through a space corresponding to two or three letters the` magnet 59 would be operated by a negative impulse or series of impulses. When the type-wheel has thus rotated to the desired position, the last impulse (whether positive or negative, as the case may he) is increased in` shaft the printingplaten is moved through` the medium of the cam-wheel S8 to effect the printing, the printing of the letter practically being done just after the type-wheel has been advanced. After the type-wheel has moved to its new position the current is broken, the magnet 74 denergized, and of course the es capements fall back to their normal positions, releasing the type-wheel shaft, and this is rotated to bring the type-wheel to its Zero position or until the arm 34 of the unison device engages the projection 33 and the typewheel is brought to rest. Another letter or letters will be printed in the saine manner and through the same set of operations until it is desired to retract the type-wheel and bring it to a position to commence a new line. A current impulse or series of current impulses then operates one or the other or both Ioo IIO

VYthe escapement-.wheel G7, and the worm-shaft at that moment commences to rotate in the direction to feed the type-wheel to the right; but as soon as one of the cam projections 116 impinges on the arm-117 the arm 11S is raised and the arm 12() impinges on the pin 124, shifting in theadj ustment of the printing-wheel. "Fur-v thermore the means for retracting the print- I andi-at high speed.

the clutch 115 into the position shown in Figs. 7 and 8, and then the worin-shaft rotates in the reverse direction to feed the type-wheel to the left. Assoon as the type-wheel reaches its proper position the type-wheel mover 64 impinges on the rod 125 and disengages the clutch from the pinion 111 and causes it to engage with the pinion 110 on the opposite side ,`and the type-wheel mover Get impinges against the face of the disk 82which acts as a positive stop therefor, so that the vertical alinement of the printed lines will be accurate or the starting-point of each line will be in the-Same relative position with relation to the.y paper. As soon as this is done the magnet74is denergized and one or the other of' the magnets 59 60 operated by proper im.

pulses to bring another letter into printing position. It may be remarked here that the relation of` the pallet with the teeth 68 of the escapement-wheel (i7 is such that whenl the .worm-,shaftis held stationary the armv 117 is. at the` lowest-part of vone of the recesses in the cam 116, so that the arm 11S-is not rocked and the4 clutch` remains in engagement with the,` rpinion 110 until the endof the line is reachedor it is desired to retract the typewheeland the t ype-wheel is set in its retracting position.4

Itwiljl be observed by those skilledfin the artth-atthe construction illustrated and describediis relatively very simple and that the receiver canoperate with a minimum power The use in this connectionof the so-calleddouble-wheel escapement/ asf-above, described, conduces to ac-.

complish these results to a large degree. So too. ,the arrangement and adjustment of the partsfare such thaty but a minimum amount of movement is required to accomplish the desired results, either in the escapements or ing-.wheel are exceedingly simple and positivefintheir nature and avoid the use of a retractingA forcewhich has to be overcome by avsuperior force in feeding the type-,wheel step by step. to printing position, which entailseomplicated mechanism and a greater expenditure of power. It will further be observedthat the arrangement of the'wormshaft or thev type-wheel-feeding shaft is in close proximity yto the type-wheel, avoiding the use of a heavy type-wheel carrier, the type-wheel mover being very light and easily movable on the worm-shaft to the exact` distance desired to attain good. alinement or spacing. I have also found it a great advantage to allow the worm-shaft to move but onethird of a rotation for each movement of the Vtype-wheel mover, as this avoids the liability of breaking or distorting the parts, which are stopped and started at short intervals.

I-Iaving thus described the construction illustrated in lthe drawings and pointed out its mode of operation, what I claim is- 1. In a printing-telegraph receiver, a typewheel adapted to be rotated and moved longitudinally on its shaft, means for rotating said shaft, and a double-wheel escapement controlling the rotation of said shaft,.substantially as described.

2. In a printing-telegraph receiver, a typewheel adapted to be rotatedan'd moved longitudinally on its shaft, means for rotating said shaft, adouble escapement comprising two escapement-wheels having teeth iat varying distances apart, and escapement-detents coperating with said teeth, substantially as described.

3. In aprinting-telegraph receiver, atypewheel adapted to be rotated and moved longitudinally on its shaft, meansfor rotating' said shaft, a double escapement comprising two escapement-wheels each having teeth but arranged at dilferent distances apart, andtwo independent detents controlling the escapement-wheels, substantially as described.

4.. In a printing-telegraph receiver, atypevwheel adapted to `be rotated1and movedi longitudinally on its shaft, means for rotating said shaft, a double' escapemeut comprising two vescapement-wheels one provided` with teeth corresponding to the characters on the type-wheel andthe other having teeth .corresponding toa lesser number of characters on the type-Wheel, and escapement-detentscooperating with the teeth, substantially as described.

5. In a printing-telegraph receiver, atypewheel adapted to be rotated'and moved longitudinally on its shaft, means for rotating said,shaft,'a double escapement comprising two escapement-wheels having a varying number of teeth, two independent detents, and means for actuating eachdetentindependently of the other to control the movements of the type-wheel, substantially as-described. d

6. In a printing-telegraph receiver, atypewheel adapted to be rotated and movedlongitudinally on its shaft, means `for rotating said shaft, a'double escapement comprising two escapement wheels having a varying number of' teeth, two independent detents each actuated independently of the other to control themovement of the type-wheel, and electromagnets adapted to be actuated bycurrents of opposite polarityto operate said detents, substantially as described.

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7 In a printing-telegraph receiver, a type# wheel adapted to be rotated and moved longitudinally on its shaft, means for rotating the shaft, a double escapement comprising two escapement-wheels,anddetents cooperating with the escapement-wheels, one of said detents and escapement-wheels being adapted to allow the shaft to turn through a greater distance than the other at each operation of the escapement, substantially as described.

8. In a printing-telegraph receiver, a typewheel adapted to be rotated and moved longitudinally on its shaft, means for rotating the shaft, a unison device for holding the type-wheel in its zero position, a double escapement controlling the movement of the shaft, and means connected to be operated by the escapement for releasing the unison device, substantially as described.

9. In a printing-telegraph receiver, a typewheel adapted to be rotated and moved longitudinally on its shaft, means for rotating the shaft, a unison device for holding the' type-Wheel in its zero position, a double escapement controlling the movement of the shaft, and means connected to be operated by either or both of the escapement-arms for releasing the unison device, substantially as de` scribed.

10. In a printing-telegraph receiver, atypewheel adapted to be rotated and moved longitudinally on its shaft, means for rotating the shaft, a double escapement controlling the rotation of the type-wheel shaft, a wormshaft, means for rotating it in opposite directions, a type-wheel mover mounted on the worm-shaft for moving the type-wheel longitudinally on its shaft, an escapement controlling the movement of said worm-shaft, and magnets for operating the two escapements, the magnets being arranged so that the wormshaft escapement is operated by a current of greater strength, substantially as described.

11. In a printing-telegraph receiver, a typewheel adapted to be rotated and moved longitudinally on its shaft, means for rotating the shaft, a double escapement controlling the rotation of the shaft, a unison device for holding the type-wheel in its zero position, a worm-shaft, means for rotating it in opposite directions, an escapement controlling its rotation, a type-wheel mover mounted on the worm-shaft, and means for reversing the rotation of the worm-shaft said means being controlled by the double escapement, the lescapement first operating to release the unison device and set the type-wheel shaft in its proper position, substantially as described.

12. In a printing-telegraph receiver,a wormshaft, means for rotating the shaft in opposite directions, an escapement-wheelmounted on the shaft, an escapement-lever coperating with said escapement-wheel controlling its rotation in one direction step by step, and means for holding said escapement-lever out of the path of the escapement-wheel to allow the worm-shaft to revolve freely in the reverse direction, substantially as described.

13. In a printing-telegraph receiver,a wormshaft, means for rotating it in opposite directions, an escapement-wheel mounted on the shaft, a cam-wheel, an escapement-lever cooperating with said escapement-wheel, a typewheel mover mounted on the worm-shaft, and a cam also mounted o n said shaft adapted to operate the printing mechanism, substantially as described.

I4. In a printing-telegraph receiver, a typewheel-mover shaft, a motor-shaft, frictional connections between the two shafts, and a clutch connected to the type-wheel-mover shaft and adapted to be shifted to rotate the shaft in opposite directions, substantially as described.

15. In a printing-telegraph receiver, a type- Wheel-mover shaft,a type-wheel mover mounted thereon, a motonshaft, frictional connections between the two shafts, a clutch mounted on the type-wheel-mover shaft, and connections operated by the type-wheel mover to control the position of the clutch, substantially as described.

I6. In a printing-telegraph receiver,a wormrshaft, a type-wheel mover mounted thereon,

a motor-shaft, connections between the two shafts, a clutch mounted on the worm-shaft, and a rod connected to the clutch and extending into the path of movement of the type- Wheel mover, substantially as described.

1,7. In a printing-telegraph receiver, a type-4 wheel shaft, a wormshaft, atype-wheel mover mounted on the worm-shaft, a motor-shaft, connections between the motor-shaft, the type-wheel shaft and worm-shaft, a clutch on the worm-shaft, and means interposed between the worm-shaft and type-wheel shaft for moving the clutch, substantially as described.

18. In a printing-telegraph receiver, atypewheel shaft, a worm-shaft, a type-wheel mover mounted on the worm-shaft, a motor-shaft, connections between the motor shaft, the type-wheel shaft and worm-shaft, a clutch on the worm-shaft, a cam connected with said clutch, a rocking arm `operated by said cam, and a pin on the type-wheel shaft adapted to engage said rocking arm to shift the clutch, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN M. JOY.

Witnesses:

JOHN H. GRANT, INI. F. GERMOND.

IIO 

